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drm/amd/display: Increase timeout for DP Disable
[WHY] When disabling DP video, the current REG_WAIT timeout of 50ms is too low for certain cases with very high VSYNC intervals. [HOW] Increase the timeout to 102ms, so that refresh rates as low as 10Hz can be handled properly. Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: <stable@vger.kernel.org>
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1 changed files with 2 additions and 2 deletions
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@ -896,10 +896,10 @@ void enc1_stream_encoder_dp_blank(
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*/
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REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2);
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/* Larger delay to wait until VBLANK - use max retry of
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* 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode +
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* 10us*10200=102ms. This covers 100.0ms of minimum 10 Hz mode +
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* a little more because we may not trust delay accuracy.
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*/
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max_retries = DP_BLANK_MAX_RETRY * 250;
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max_retries = DP_BLANK_MAX_RETRY * 501;
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/* disable DP stream */
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REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0);
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